US3729612A - Switch mechanism including quick detachable electrical connector means - Google Patents

Switch mechanism including quick detachable electrical connector means Download PDF

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Publication number
US3729612A
US3729612A US00190189A US3729612DA US3729612A US 3729612 A US3729612 A US 3729612A US 00190189 A US00190189 A US 00190189A US 3729612D A US3729612D A US 3729612DA US 3729612 A US3729612 A US 3729612A
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US
United States
Prior art keywords
base
leaf
spring
pair
abutment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00190189A
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English (en)
Inventor
J Schmale
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BBC Brown Boveri AG Switzerland
Original Assignee
Bbc Brown Boveri & Cie
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bbc Brown Boveri & Cie filed Critical Bbc Brown Boveri & Cie
Application granted granted Critical
Publication of US3729612A publication Critical patent/US3729612A/en
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Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5844—Electric connections to or between contacts; Terminals making use of wire-gripping clips or springs

Definitions

  • SWITCH MECHANISM INCLUDING QUICK DETACHABLE ELECTRICAL CONNECTOR MEANS BACKGROUND OF THE INVENTION
  • the principal object of this invention is to improve electric connectors for conductors or cables of the solderless type, not requiring clamping screws for achieving the required contact pressure, but achieving such pressure solely by resilient or spring means.
  • a connector of this description is disclosed in US. Pat. No. 2,944,242. This connector includes a clamping spring and a socket or base the manufacture of which are relatively costly, and this applies also to the process of assembling the constituent parts of the connector disclosed in the above patent.
  • the present invention pertains to the class of devices including a conductor-engaging conductive abutment, i.e., a conductive abutment intended to be engaged by the bare end of a cable or wire, a resilient pressure member for clamping the bare end of a conductor or wire against said abutment, and a base supporting said abutment and said pressure member.
  • the base has recesses for insertion of the conductor or cable and recesses for insertion of a tool, e.g., of a screw driver, into it, by which tool the pressure member is separated from the abutment in order to allow insertion of the bare end of a cable or wire into the connector, or in order to allow removal of the bare end of a cable or wire from the connector.
  • a tool e.g., of a screw driver
  • the pressure member is formed by a substantially flat leaf spring having a conductor-engaging front end, a rear end having a sharp bend clamped against, and firmly held in by position by, said base, said base defining a pair of leaf-spring-engaging projections positioned at opposite sides of said leaf-spring at points intermediate said front end and said rear end thereof.
  • FIG. 1 is a cross-section along II of FIG. 3 of an electric switch having connector means embodying the present invention
  • FIG. 2 is a cross-section along 11-" of FIG. 3 of the same electric switch as that shown in FIG. 1;
  • FIG. 3 is a bottom plane view of the structure shown in FIGS. 1 and 2;
  • FIG. 4 illustrates by way of a cross-section of the structure of FIG. 3 the insertion of leaf-springs into the base or frame of the switch.
  • the switch illustrated in FIGS. 1 to 4 includes a base or frame 1 having a median plane.
  • a cam-type rotary contact-operating shaft 2 is arranged above and supported by base 1.
  • the axis of rotation of cam shaft 2 is arranged in the median plane of base 1.
  • Reference numeral 4 has been applied to indicate a fixed contact and reference numeral 5 has been applied to indicate a movable contact separable from fixed contact 4 and adapted to engage fixed contact 4.
  • Resilient movable contact 5 is arranged to be operated by cam shaft 2.
  • Reference numeral 3 has been applied to indicate each of a pair of conductor-engaging or cable-engaging conductive abutrnents.
  • Abutments 3 are arranged at opposite sides of the median plane of base 1 immediately adjacent parallel opposite edges thereof.
  • the upper abutment 3 of FIGS. 1 and 2 is provided with a cantilever-like projection enclosing a right angle with the abutment 3 proper and supporting fixed contact 4.
  • the lower abutment 3 of FIGS. 1 and 2 and movable contact 5 are formed by an integral part.
  • Reference numeral 21 has been applied to indicate a conductor or insulated cable having a bare end engaging one of abutments 3 and clamped by a leaf-spring 6 against said abutment.
  • the upper abutment 3 of FIGS. 1 and 2 may be engaged by the bare end of an insulated cable (not shown).
  • Abutments 3 are each arranged in a recess or chamber 7 of base 1 and firmly positioned therein by cooperating interlock means, thus precluding any movement of abutrnents 3 in a direction at right angles to the general plane of base 1 or in a direction of the bare end of cable 21.
  • one of abutments 3 is provided with a tongue 15 arranged behind an overhanging portion 17 of base 1.
  • another of abutrnents 3 is provided with an aperture 16 engaged-by a projection 18 of base 1.
  • Elements 15,17 and 16,18 form interlocks precluding unintentional movement of abutrnents 3 relative to base 1.
  • Reference numeral 8 has been applied to indicate grooves formed in base 1 for receiving substantially flat leaf-springs 6.
  • the ends of grooves 8 remote from the median plane of base 1 communicate with recesses or chambers 7 for abutrnents 3.
  • the front ends of leafsprings 6 are intended to engage the bare ends of conductors such as the bare end of cable 21 and clamp the same against abutrnents 3.
  • Reference numerals 9 and 10 have been applied to indicate leaf-spring-engaging projections formed by base 1. Projections 9 are arranged close to the front ends of leaf-springs 6 engaging conductors such as cable 21.
  • Projections 10 are arranged substantially midway between the front ends and the rear ends of leaf-springs 6. Projections 9 and 10 are positioned on opposite sides of leaf-springs 6.
  • Projections 9 are arranged to engage the lower sides or lower surfaces of leaf-springs 6 in the absence of a con ductor or cable 21 engaging the respective abutment 3. This is shown in the upper portion of FIG. 2.
  • Projections 10 are arranged to engage the upper sides or upper surfaces of leaf-springs 6 in the presence of a conductor or cable 21 engaging the respective abutment 3. This is shown in the lower portion of FIG. 1.
  • the rear ends of leaf-springs 6 have a sharp bend 12, e.g., a bend 12 slightly less than deg. which is clamped against and firmly held in position by base 1. To this end the lowest portion 11 of base 1 is provided with grooves 13 receiving the bend rear ends 12 of leafsprings 6.
  • leaf-springs 6 may be provided with at least one slot 14 extending in a direction generally longitudinally of leaf-springs 6 and imparting fork-shape to the latter.
  • Reference numeral 19 has been applied to indicate recesses or passageways for inserting the bare ends of cables 21 into base 1
  • reference numeral 20 has been applied to indicate recesses or passageways intended for insertion of a tool 22, e.g., a screw driver, into base 1 to compress leaf-springs 6 to separate the front ends thereof from abutments 3 in order to insert a conductor 21 or in order to remove a conductor 21 from base 1.
  • a tool 22 e.g., a screw driver
  • reference character 23 has been applied to indicate two arrows diagrammatically representing pressure tools for inserting the rear ends of leaf-springs 6 into base 1, i.e., into the aforementioned grooves 13 thereof.
  • Pressure tools 23 engage leaf-springs 6 at points close to the bent portions 12 thereof.
  • the portion or projection 11 of base 1 is provided with slots 24 intended for insertion of pressure tools 23.
  • the aforementioned recesses 19 and 20 are oriented substantially at right angles to the general plane of base 1 and leaf-springs 6 are slanted relative to said plane and diverge from the median plane of base 1.
  • FIGS. 1 to 4 is but one of many possible embodiments of this invention which is, in essence, a new and improved electrical connector.
  • An electric device including a conductor-engaging conductive abutment, a resilient pressure member for clamping the bare end of a conductor against said abutment and a base supporting said abutment and said pressure member and having recesses for insertion of said conductor and for insertion of a tool for separating said pressure member from said abutment
  • said pressure member is formed by a substantially flat leafspring having a conductor-engaging front end, a rear end having a sharp bend clamped against and firmly held in position by said base, said base defining a pair of leaf-spring-engaging projections positioned at opposite sides of said leaf-spring at points intermediate said front end and said rear end thereof, one of said pair of projection being arranged to engage one side of said leaf-spring and the other of said pair of projections being arranged to engage the other side of said leafspring.
  • leaf-spring is provided with at least one slot extending in a direction longitudinally of said leaf-spring imparting fork-shape to said leaf-spring.
  • An electric switch including a. a base having a median plane;
  • a pair of cooperating relatively movable contacts supported by said base b. a pair of cooperating relatively movable contacts supported by said base; and c. a pair of electrical connectors supported by said base each including a conductor-engaging conductive abutment conductively connected to one of said pair of contacts, a pressure member formed by a substantially fiat leaf spring having a conductor-engaging front end, a rear end arranged substantially in said median plane of said base and having a sharp bend'clamped against and firmly held in position'by said base, said base having a first recess adjacent said abutment of each of said pair of electrical connectors for insertion of the end of a conductor into said base, said base further having a second recess situated between said front end and said rear end of said leaf-spring of each of said pair of electrical connectors allowing compression thereof by means of a tool, and said base further defining two pairs of leaf-spring-engaging projections, one of each of said pairs of leafspring-engaging projections being arranged to

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Clamps And Clips (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Tumbler Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
US00190189A 1970-10-31 1971-10-18 Switch mechanism including quick detachable electrical connector means Expired - Lifetime US3729612A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2053595 1970-10-31

Publications (1)

Publication Number Publication Date
US3729612A true US3729612A (en) 1973-04-24

Family

ID=5786787

Family Applications (1)

Application Number Title Priority Date Filing Date
US00190189A Expired - Lifetime US3729612A (en) 1970-10-31 1971-10-18 Switch mechanism including quick detachable electrical connector means

Country Status (8)

Country Link
US (1) US3729612A (cs)
AT (1) AT317328B (cs)
DE (1) DE2053595B1 (cs)
ES (1) ES210330Y (cs)
FR (1) FR2111157A5 (cs)
GB (1) GB1342543A (cs)
NO (1) NO130523C (cs)
SE (1) SE387012B (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988553A (en) * 1974-05-09 1976-10-26 Michael J. Cozy Lighting control
EP0029267A1 (en) * 1979-11-20 1981-05-27 Conex Union B.V. Connector for electric wires

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2724354C2 (de) * 1977-05-28 1982-09-30 C.A. Weidmüller KG, 4930 Detmold Schraubenlose Klemme für elektrische Leiter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2705785A (en) * 1952-11-18 1955-04-05 Gen Electric Wiring device terminal connecting means
US2738482A (en) * 1953-11-25 1956-03-13 Gen Electric Surface wiring devices
US2795677A (en) * 1955-05-12 1957-06-11 Saul I Slater Electrical wiring device
US3315052A (en) * 1965-07-16 1967-04-18 Goto Mo Operating mechanism for a miniature tumbler switch
US3482064A (en) * 1967-12-06 1969-12-02 Mc Gill Mfg Co Electrical switch having pressure contacts

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2705785A (en) * 1952-11-18 1955-04-05 Gen Electric Wiring device terminal connecting means
US2738482A (en) * 1953-11-25 1956-03-13 Gen Electric Surface wiring devices
US2795677A (en) * 1955-05-12 1957-06-11 Saul I Slater Electrical wiring device
US3315052A (en) * 1965-07-16 1967-04-18 Goto Mo Operating mechanism for a miniature tumbler switch
US3482064A (en) * 1967-12-06 1969-12-02 Mc Gill Mfg Co Electrical switch having pressure contacts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988553A (en) * 1974-05-09 1976-10-26 Michael J. Cozy Lighting control
EP0029267A1 (en) * 1979-11-20 1981-05-27 Conex Union B.V. Connector for electric wires

Also Published As

Publication number Publication date
FR2111157A5 (cs) 1972-06-02
NO130523C (cs) 1974-12-27
DE2053595B1 (de) 1971-12-09
GB1342543A (en) 1974-01-03
ES210330U (es) 1976-05-01
SE387012B (sv) 1976-08-23
AT317328B (de) 1974-08-26
ES210330Y (es) 1976-10-01
NO130523B (cs) 1974-09-16

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